Perforating machine



May 22, 1934, H. P. HOLBROOK PERFORATING MACHINE Filed Sept. 3, 1932 2 Sheets-Sheet 1 M flttoi'izgg 2 sheets-Sheet 2 H. P. HOLBROOK PERFORATING MACHINE Filed Sept; 5, 193g May 22, 1934.

Patented May 22, 1934 I UNITED STATES, PATENT OFFICE 1,960,009 PERFORATING MACHINE Harrison P. Holbrook, Whitman, Mass. Application September 3, 1932, Serial No. 631,680 4 Claims. 164-93) The present invention relates to perforating usual remedy is for a shoe factory employee to machines which are used in the manufacture shim the die in an attempt to locate the cutting of shoes to form ornamental cutouts and ventiedges in a horizontal plane'parallel to the worklating openings in shoe parts. engaging face of the presser member.

Generally, these perforating machines are pro- The principal object of the present invention vided with a bed, a presser member having a is to provide the perforating machine with work-engaging face mounted for movement means for relatively adjusting the die and the toward and away from the bed, and a die havpresser member to locate the work-engaging face ing upstanding cutting edges interposed between thereof and the cutting edges of the die in parthe bed and the presser member to pierce the allel horizontal planes. shoe part placed between the die and the presser To the accomplishment of this object and such member. As first constructed the die was others as may appear hereinafter, the features mounted to slide, like a drawer, on the bed into of the present invention consist in certain de-- and out of position beneath the presser member. vices, combinations, and arrangements of parts Later, in order to operate upon made shoe uppers fully described hereinafter and then pointed out 70 closed by the back seam, it was considered adviin the claims which possess advantages readily sable to support the die upon an elevated strucapparent to those skilled in the art. ture called an anvil, which was mounted to The various features of the present invention slide, clear of the lateral sides of the machine, will be readily understood from an inspection into and out of position beneath the presser of the accompanying drawings illustrating the 75 member. Many perforating machines provided best form of the invention at present known to with die supporting structures of the anvil typethe inventor, in which went into commercial use; For some time past, Figure 1 is a view in front elevation of a perhowever, shoe manufacturers have preferred to forating machine;

v employ dies of the original flat bed type in the Fig. 2 is a view in plan of the die and the 8 perforating machines of the anvil type, and in supporting structure therefor;

consequence it has been necessary to provide Fig. 3 is a view in sectional elevation on the the top of the anvil with a guideway to receive line 3-3, Fig. 2;

e the dies of the fiat bed type. But whether Fig. 4 is a view in sectional elevation on the the dies are of the anvil or fiat bed type, it is line 4-4, Fig. 3, and

the general practice for commercial die makers Fig. 5 is a detail view in left side elevation to furnish the shoe manufacturers with the dies of the pivotal connection between the die supfor use in the perforating machines. The die port and the base member of the die supporting makers have a perforating machine in which structure.

they test the die before it is sent out to the shoe For purposesof disclosure the various features manufacturer. One important test is to deterof the present invention are illustrated as being mine whether the cutting edges of the die and embodied in the perforating machine disclosed the work-engaging face of the presser member in the patent to Knight, No. 1,584,230, May 11,

are in parallel horizontal planes. If they are 192 A h th machine (Fig, 1 is 40 not located in such planes; the presser member vided with a bed 6 and a presser member 7, will engage one portion of the shoe part before having a work engagmg f e 3, which is recip another, with the result that the cutting edges mcated towards and away from the bed 6 by beneath the shoe palt last engaged by the presser connections from some suitable source of power.

member will cut light. When this occurs the 2 As is usual, the bed 6 is provided with a guide 45 due makers level the cuttmg edges of the (he by 9 medially located between opposite lateral edges m0 planing the bottom surface thereof. But when the tested die is sent to the shoe manufacturer g f' Mounffied to shfie i on t beu 6 is an anvil 10 provided on its bottom with for insertion in the shoe factory perforating machine, it is f d t t Owing to many condi a central groove 11 which receives the guide 9. tions such as wear, maladjustment and founda- The top of the anvil 10 carries a grid 12 (Figstion settling, the cutting edges of the die and 2 and 3) which forms a Supporting ce for the-work-engaging face of thepresser member a die 13, 0f the flat bed yp mounted to Slide are not in parallel horizontal planes, notwith- 0n the d into d 0111; Of Position beneath e standing the careful workmanship of the die presser member 7. To this end the grid 12 is 55 maker. While the die maker is blamed, the provided with the yoked arms 14, the lateral in its sliding movement.

As shown in Figs. 2 and 3, the die is provided with a plurality of tubes 16 having upstanding cutting edges 17 for forming a plurality of ventilating openings 18 in the vamp and lining of a shoe upper 19 closed by a back seam. The shoe upper 19 is supported on the die so that the parts to be perforated extend over the cutting edges 17, (Figs. 2 and 3).

In order to locate the work-engaging face 8 of the'presser member '7 and the cutting edges 17 in parallel horizontal planes, the anvil 10 is formed in two parts, namely, a support 20 (Figs. 4 and 5) to which the grid 12 is secured, and a base member 21 which slides on the bed 6. The support 20 and the base member 21 are tied together in a manner permitting limited relative movement by a pair of vertical bolts 22 (Fig. 2) the bottoms of which are threaded to receive nuts 23 (Fig. 3) which are mounted in countersinks formed in the bottom of the base member 21. The upper ends of the bolts 22 pass loosely into chambers 24 formed in the support 20. Coiled about the shank of each bolt 22 and interposed between the head thereof and the chamber 24 is a spring 25.

Secured to the base member 21 is a horizontal bearing pin 26, the opposite ends of which are journaled in ears 27 (Fig. 4) formed at the lower rear end edge corners of the support 20.

In order to tip the support 20 on the pin 26, the bottom of the support, which is inclined upwardly and forwardly, is engaged by the inclined face on a wedge 28, the fiat face of which engages the flat top face of the base member 21.

To reciprocate the wedge 28 in engagement with the bottom of the support 20 and with the top of the base member 21, the center of the bearing pin 26 is bored transversely to receive the reduced end of a spindle 29 which extends upwardly and forwardly in a slot 30 formed in the bottom of the support20. The spindle 29 rotates in the pin 26 but is held from movement longitudinally by a shoulder 31 'and a collar 32 which embrace the pin 26. The spindle 29 may be rotated by a finger piece 33 secured to the forward end thereof. Intermediate its ends the spindle 29 is threaded to receive a nut 34 which is secured in a recess 35 formed on the inclined face of the wedge 28. The wedge is guided in its reciprocating movement by the shanks of the bolts- 22 which pass loosely through slots 36 formed through the wedge.

With the perforating machines in the shoe and die factories, respectively, provided with the various features of the present invention, the die maker is able to locate the work-engaging face of the presser member and the cutting edges of the die in .parallel horizontal planes, knowing that when the die is sent to the shoe factory a simple manipulation of the finger piece 33 will enable the operative to locate the 1,980,009 edges 15 of which are formed to guide the die work-engaging face and the cutting edges of the die in parallel horizontal planes notwithstanding variations in the shoe factory perforating machine from the die factory perforating machine.

The die supporting structure 10 is not weak ened by being divided into the two parts 20 and 21 as the wedge engages their adjacent faces and constitutes an important element in transmitting without breakage the heavypressure exerted by the presser member to the bed 6.

Nothing herein explained is to be interpreted as limiting the invention in the scope of its application to use in connection with the particular apparatus or the particular mode of operation or both selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention, it is not limited to these details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be modified within the skill of the artisan without departing from the true scope of the actual inventions, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive of various modifications.

What is claimed as new, is:

1. In a die press, the combination with means forforming cut-outs in a shoe part and means for supporting the cut-out means for horizontal movement, of means for tipping the supporting wedge interposed between the support and the,

base member, and means for adjusting the position of the wedge longitudinally to tip the support.

4. A die supporting structure having, in combination, means for forming cut-outs in a shoe part, a support therefor, a base member having a transverse bearing rod journaled in the support, a wedge interposed between the support and the base member, and means for adjusting the wedge longitudinally comprising a threaded spindle having one end rotatably mounted in the rod, a finger piece at the other end of the spindle to facilitate its rotation, and a nut, threaded to receive the spindle, secured to the base member.

HARRISON P. HOLBROOK.. 

